What actually happens in MASSO when you code a M666/M667? I don't see where you can assign any signal outputs to turn anything on or off. The unit above inserts itself between Masso Z-Axis output and the Servo/Stepper driver input to control step and direction of Z. There is a THC disable input to this unit for anti-dive, but i can find no signal output from MASSO that would tie in with M666/M667 to supply a disable signal (24vdc) to the THC unit. Does the M666 just allow the THC1, THC2, THC3and THC4 inputs to MASSO to be active? What would it take to be able to assign outputs (digital or relay) for these M-codes?